175,827 research outputs found

    UML Extensions for Real-Time Control Systems

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    The use of object oriented techniques and methodologies for the design of real-time control systems appears to be necessary in order to deal with the increasing complexity of such systems. Recently many object-oriented methods have been used for the modeling and design of real-time control systems. We believe that an approach that integrates the advancements in both object modeling and design methods, and real-time scheduling theory is the key to successful use of object oriented technology for real-time software. Surprisingly several past approaches to integrate the two either restrict the object models, or do not allow sophisticated schedulability analysis techniques. In this paper we show how schedulability analysis can be integrated with object-oriented design. More specifically, we develop the schedulability and feasibility analysis method for the external messages that may suffer release jitter due to being dispatched by a tick driven scheduler in real-time control system, and we also develop the scheduliability method for sporadic activities, where message arrive sporadically then execute periodically for some bounded time. This method can be used to cope with timing constraints in realistic and complex real-time control systems. Using this method, a designer can quickly evaluate the impact of various implementation decisions on schedulability. In conjunction with automatic code-generation, we believe that this will greatly streamline the design and development of real-time control system software

    An object oriented data model for vehicle dynamics problems

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    The design of automotive systems using computer codes for vehicle dynamics problems features cost reduction and quality enhancement. This paper presents two basic approaches. The first approach deals with the application of CAD data bases to the evaluation of input data for multibody system formalisms, most adequate for automotive system modelling. An object oriented data model for multibody systems is presented. The second approach covers the development of an integrated simulation tool for automotive vehicles and the corresponding animation facilities. As an example the dynamical analysis of a van is shown including the choice of optimal suspension parameters

    Object-Oriented Analysis And Design Of Research Seminar Online Registration In Higher Education

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    Nowadays the quality aspects of information technology (IT) implementation plays an imperative role in the case of supporting services to its related stakeholders, mainly more on the issue of an effective and efficient process. To provide a more reliable, understandable, reusable, and maintainable academic information systems, Graduate School of IPB needs to improve the quality of its IT. Development of information systems (IS) through the proper stages of analysis and design expected to create a reliable and qualified IS. This research will evaluate the effectiveness of Academic Management IS. An evaluation conducted by observing the current system, using questionnaires, and measurement using a Likert scale. Questionnaire instrument tested for its validity (Product Moment) and reliability (Cronbach's Alpha) using SPSS version 19. This study adopts an integrated database schema that IPB has developed and designing research seminar online registration prototypes using object-oriented approach for a better IS future development.Keywords: Object-orientedapproach, prototypes, Reliability Alpha Cronbach’s, Skala Likert, SPSS,  Validity Product Mome

    PERANCANGAN SISTEM INFORMASI PELAYANAN DAFTAR USULAN PENETAPAN ANGKA KREDIT SECARA ONLINE BERBASIS WEBSITE DIREKTORAT JENDERAL PELAYANAN KESEHATAN KEMENTERIAN KESEHATAN

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    ABSTRACTDevelopment of a service information system on the list of proposals for determining credit points online based on a website. Service information system list of credit score determination proposals (Simpadu) is a system used to track or monitor DUPAK file management (list of credit score determination proposals) health functional positions at the Directorate General of Health Services conducted through the Integrated Services Unit (ULT) and this is strengthened with the DUPAK Circular Letter dated 4 - May - 2015, in the context of improving the quality of service and orderly administration in the process of Determining Functional Credit Score in the Health sector. This research is a type of Applied Research. The information system development method uses the Prototype model. The method of data collection is done by observation, data sampling, literature study, and interviews. The method used in analyzing and designing a system is the Object Oriented Analysis and Design method using Unified Modeling Language (UML). The results of this research are in the form of software in the form of website Information Systems list service of determining credit numbers that can serve to provide information on the management of DUPAK files. Keywords:     Information Systems service list of proposals for determining credit points, DUPAK, Prototype, Object-Oriented Analysis and Design
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